اندازه گیری کارایی هزینه در تحلیل پوششی دادههای شبکهای
الموضوعات :شهروز فتحی اجیرلو 1 , علیرضا امیرتیموری 2 , سهراب کرد رستمی 3
1 - گروه ریاضی، پردیس علوم و تحقیقات گیلان، دانشگاه آزاد اسلامی، رشت، ایران. گروه ریاضی، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران
2 - گروه ریاضی، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران
3 - گروه ریاضی، واحد لاهیجان، دانشگاه آزاد اسلامی، لاهیجان، ایران
الکلمات المفتاحية: Network System, Data Envelopment Analysis, cost efficiency,
ملخص المقالة :
تحلیل پوششی داده ها یک رویکرد نسبتاً جدید با ماهیت داده ای برای ارزیابی عملکرد مجموعه ای از موجودیت های همتا به نام واحدهای تصمیم گیری (DMUها) است که چندین ورودی را به چندین خروجی تبدیل می کنند. DEA در دوره زمانی نسبتاً محدودی تبدیل به ابزار کمّی و تحلیلی قدرتمندی برای اندازهگیری و ارزیابی عملکرد شده است. DEA در انواع مختلفی از کاربردها در فعالیت ها و محیط های مختلف در سرتاسر دنیا با موفقیت به کار گرفته شده است. همچنین مسأله ی اندازه گیری کارایی هزینه در سیستم های تولیدی و اقتصادی یکی از مسائل مهم روز دنیا می باشد. در دنیای واقعی سیستم های اقتصادی و تولیدی وجود دارند که از ترکیب واحدهای مستقل تشکیل شده اند و یکی از روش های اندازه گیری کارایی هزینه برای سیستم های اقتصادی و تولیدی روش DEA می باشد. این مقاله دو مدل DEA شبکه ای را برای اندازه گیری کارایی هزینه از مدل شبکه ای با مولفه های پردازش یکسان با در نظر گرفتن عملکردهای پردازش های فردی در ساختار شبکه را ارائه می کند. در این مقاله به بررسی مدل کارایی هزینه فار و همکاران پرداخته شده و با اعمال تغییراتی در مدل فار و همکاران به ارائه دو مدل جدید تحلیل پوششی داده های شبکه ای و توسعه یافته برای اندازهگیری کارایی هزینه در سیستمهای شبکهای اقتصادی و تولیدی پرداخته شده است.
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